- Derek Meddings
- supervising special effects director (32 episodes, 1965-1966)
- David Mitton
- special effects (15 episodes, 1965-1966)
- Michael Wilson
- special effects lighting cameraman / special effects lighting (31 episodes, 1965-1966)
- Harry Oakes
- special effects lighting cameraman: second unit / special effects lighting cameraman (26 episodes, 1965-1966)
- Brian Johnson
- special effects director: second unit / special effects assistant (21 episodes, 1965-1966)
- Garry Coxall
- special effects camera operator: second unit (16 episodes, 1965-1966)
- John Foley
- special effects camera operator: second unit (9 episodes, 1965)
- Jimmy Elliott
- special effects director (5 episodes, 1966)
- Ian Scoones
- special effects director: second unit (3 episodes, 1966)
- Shaun Whittacker-Cook
- special effects director: second unit / special effects director (3 episodes, 1966)
- Peter Aston
- model maker (uncredited) (32 episodes, 1965-1966)
- Ian Wingrove
- special effects technician (uncredited) (2 episodes, 1966)
- Mike Trim
- special effects assistant (uncredited) (1 episode, 1965)
- John Howard
- special effects technician (uncredited) (1 episode, 1966)
- Stephen J. Mattick
- special effects technician (uncredited) (1 episode, 1966)
- Nick Middleton
- special effects technician (uncredited) (1 episode, 1966)
- Peter Wragg
- special effects technician (uncredited) (1 episode, 1966)
- Joy Cuff
- model maker (uncredited) (unknown episodes)